Systems Administrator, Senior | Top Secret clearance w/SCI eligibility

American Systems•Chantilly, VA

5d•Onsite

About The Position

AMERICAN SYSTEMS is seeking a motivated, customer-focused Senior Systems Administrator to provide Tier II operational support for a high-visibility customer mission. The role supports the availability, performance, security, and reliability of a complex, secure enterprise IT environment within an Enterprise Operations Center (EOC). It is full-time, onsite, and first shift in Chantilly, Virginia, with an anticipated future relocation to Arlington, Virginia. The administrator will support enterprise systems and platforms, work with customer and technical teams to resolve operational issues, participate in ITIL service management, document and execute approved changes, and maintain operational documentation. The role also includes supporting testing and production integration, applying security and hardening guidance, providing technical guidance to junior staff, and participating in shift turnover.

Requirements

Active Top Secret clearance with SCI eligibility.
One of the following education and experience combinations: bachelor's degree and 5+ years of systems support or administration experience; associate's degree and 7+ years of relevant experience; or high school diploma and 11+ years of relevant experience.
Current DoD 8140 IAT Level II certification, such as Security+ CE.
Ability to obtain a DoD 8140 computing-environment certification within 6 months of hire, such as MCSA, VCP, or equivalent.
Experience supporting Microsoft Windows environments, including Windows Server 2008–2022, Windows 10/11, Exchange, Active Directory, DNS, Group Policy, PKI, workstation/server hardware, backup, antivirus, DHCP, and TCP/IP.

Nice To Haves

Working knowledge of VMware and Cisco systems, including vSphere or Horizon View, Cisco networking devices, and TACLANE encryption devices.

Responsibilities

Provide Tier II systems administration and operational support for a secure enterprise environment.
Monitor, troubleshoot, and resolve system availability, performance, security, and configuration issues.
Administer and support VMware vCenter, Horizon View, and Site Recovery Manager; SolarWinds, Cisco Catalyst Center (DNAC), and GEMOne; HP SANs and enterprise storage platforms; Microsoft Certificate Services, PKI, Active Directory, Group Policy, DNS, and DHCP; Windows Server and desktop operating systems; and backup, recovery, endpoint protection, and systems-management tools.
Maintain the health, performance, and availability of multi-user systems.
Partner with network, cybersecurity, engineering, service desk, and customer teams to resolve operational issues.
Analyze requirements and support the integration, configuration, and sustainment of supported platforms.
Participate in ITIL service management, including incident, problem, and change management activities.
Prepare, document, and execute approved change requests.
Develop and maintain Standard Operating Procedures (SOPs), knowledge articles, and technical documentation.
Support project and engineering teams with testing, packaging, release preparation, and production integration.
Apply applicable security requirements, hardening guidance, and operational best practices.
Provide technical guidance to junior Systems Administrators and Systems Engineers.
Participate in shift turnover and document incidents, actions taken, and outstanding risks.